import java.util.concurrent.Executors;
import java.util.concurrent.locks.ReentrantLock;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 87111
 * Date: 2025-11-07
 * Time: 16:03
 */
public class Demo3 {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
        ReentrantLock locker = new ReentrantLock();
        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 5000; i++) {
                locker.lock();
                count++;
                locker.unlock();
            }
        });
        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 5000; i++) {
                locker.lock();
                count++;
                locker.unlock();
            }
        });
        t1.start();
        t2.start();

        t1.join();
        t2.join();
        System.out.println("count = " + count);
    }
}
